I think Gibson probably threw mid 90s although they did not have the guns on them all the time back then. Now did he throw that on two days rest? Probably not but I bet he was still throwing low 90s with good location. These guys throw hard now but lack location. Gray would not have dominated back then because he lacks location. His 93-94 is not much faster than many threw back then. At least not the current Jo Jo. BTW they also threw breaking balls back then also. Probably not as many change ups. They were generally taught to pitch for contact so they could pitch lots of innings.